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(38,288 articles)
Popular News
Airborne Digital Sensor Makes Maiden Voyage
Mar 1, 1999 — LH Systems LLC in San Diego, in cooperation with the German Aerospace Center in Berlin, completed the first test flight of its airborne digital sensor. The sensor can record data at high resolution for digital terrain models. Components include 12,000-pixel charge-coupled-device line sensors, a high-performance lens from SwissOptic in Heerbrugg, Switzerland, and a high-precision focal plane module with a built-in cooling facility.
Companies at Risk of Stock Delisting
Mar 1, 1999 — The Nasdaq Stock Market Inc. has notified Stocker & Yale Inc. of Salem, N.H., and Semiconductor Laser International Inc. of Binghamton, N.Y., that they are out of compliance with the listing requirements of its SmallCap Market. Nasdaq listing...
Tethered AFM Offers Operators More Flexibility
Mar 1, 1999 — A researcher at the National Research Council of Canada has adapted a commercial atomic force microscope (AFM) to perform near-field scanning in a tethered mode. This could have a significant impact on testing photonic devices such as waveguides and...
Atomic Force Microscope Could Draw Tiny Circuits
Mar 1, 1999 — Scientists at Northwestern University in Evanston, Ill., have found a new application for atomic force microscopes: fabricating nanoelectronic circuitry. Researchers at the university discovered that the lab tool could transfer molecules with...
Ballast Water Purified with UV Waves
Mar 1, 1999 — If "bioinvasions" has a futuristic sound to it, the future is now. With the speed and volume of global travel, even organisms can find themselves quickly transplanted to a new environment. In some cases, that can spell disaster for the fragile...
Nichia's Blue Diodes Find a Home
Mar 1, 1999 — Barely a month after Nichia Chemical Industries Ltd. announced the first shipments of its blue laser diodes, a second company has rushed to incorporate the diodes into a laser system touted as a more powerful blue light source for spectroscopy. In...
Uncooled IR Detector Could Enable Cheaper Cameras
Mar 1, 1999 — MSI engineers are working to develop an uncooled infrared detector that will enable the production of inexpensive IR cameras. Such a detector could penetrate such markets as vision assistance systems for automobiles and industrial monitoring...
All-Photonic Circuits at Hand
Mar 1, 1999 — Nanovation Technologies Inc. has entered the testing phase of its development of a fully integrated optical circuit, a technology that promises to deliver faster, higher-capacity communications to the marketplace by the end of the year, in packages...
Phased out by Coherent Control
Mar 1, 1999 — A "textbook" laboratory demonstration of a basic quantum physical principle could lay the groundwork for practical applications in photochemistry, forensics, quantitative analysis and quantum computing. Using ultrafast optical techniques,...
School of Optics Hosts Inaugural Conference
Mar 1, 1999 — The Center for Research and Education in Optics and Lasers (CREOL) kicked off an inaugural conference Jan. 11 and 12 to celebrate the opening of its School of Optics at the University of Central Florida in Orlando. Distinguished members of the...
UV Light Reveals Dinosaur Organs
Mar 1, 1999 — A team of scientists has used UV radiation to examine the internal organs of a baby dinosaur fossil discovered in Italy more than 15 years ago. The fossil was originally found embedded in a limestone formation north of Naples. When it was...
Company Promises Painless Glucose Monitoring
Mar 1, 1999 — Diabetics around the globe have yearned for an alternative to the lancet and needle to monitor blood glucose levels. The wait may soon be over. Norcross, Ga.-based SpectRx Inc. has developed a device that painlessly monitors a person's blood glucose...
Polishing System Takes Pressure off Making Aspheres
Mar 1, 1999 — As the use of aspherical optical components broadens, the industry is trying to overcome the challenges that the processing of those surfaces present. Researchers at the Delft University of Technology have developed a finishing process that uses a...
Thomson Scattering Made Relative
Mar 1, 1999 — In what is being hailed as groundbreaking research that could provide hints about how light and matter interact, physicists at the University of Michigan Center for Ultrafast Optical Science have shown that both the electric and magnetic fields of...
Spectrometer Made Smaller, Less Expensive
Mar 1, 1999 — Scientists at the University of Ulm in collaboration with LaserSpec Analytik GmbH have unveiled an atomic absorption spectrometer that uses a laser diode as a light source and a tungsten coil to atomize samples -- advances that could lead to...
Tuning Diodes
Mar 1, 1999 — A burgeoning fiber optic communications industry is nourishing advances in support devices, not the least of which is the development of tunable laser diodes. Research groups are exploring methods to achieve tunable laser diodes. One group has come...
Volcanic Gas Measured at a Safe Distance
Mar 1, 1999 — Volcanic gases offer important clues to atmospheric and subsurface processes, but methods that have proved safe have not proved easy. Scientists using ground-based IR remote-sensing techniques to analyze volcanic plume gases must often contrive...
Sensor Detects Red Algae Growth
Feb 1, 1999 — What do Hong Kong and Corpus Christi, Texas, have in common? They've both been hit by algae red tides in the last two years. The mysterious bloom of toxic algae pops up in oceans around the world, threatening public health and wreaking economic...
New Coatings Break Reflectivity Barriers
Feb 1, 1999 — Researchers at the Massachusetts Institute of Technology have discovered a class of dielectric coatings that can reflect a broad wavelength regime over a wide angular range. Professor John D. Joannopoulos and his colleagues discovered the reflective...
Synthetic Gemstone May Hold Key to Photonic Crystals
Feb 1, 1999 — Researchers at AlliedSignal Inc. in Morristown, N.J., have found a new use for synthetic opals. In experiments, the researchers introduced carbon into the faux gemstone's lattice. Then they chemically removed the gem, leaving behind a crystalline...
Universe May Hold Diamond Concentrations
Feb 1, 1999 — Our galaxy may contain high concentrations of tiny diamonds in carbon-rich planetary nebulae. That's the finding of a group of researchers from the Institut d'Astrophysique Spatiale in Paris. The group theorized that the low pressures and...
Diode Laser Turns up the Power in the Mid-IR
Feb 1, 1999 — Research at Northwestern University has introduced new options for semiconductor lasers operating in the mid- infrared range. Led by professor Manijeh Razeghi, scientists at the university's Center for Quantum Devices have developed high-power...
Disordered Films, Powders Exhibit Lasing Capabilities
Feb 1, 1999 — Semiconductor lasers may be brighter than light-emitting diodes (LEDs), but that advantage certainly comes at a premium. Now researchers at Northwestern University have demonstrated lasing in highly disordered films and powders, a development that...
Laser Pulses 'Freeze' Energy Flow
Feb 1, 1999 — Scientists at the University of Illinois in Urbana-Champaign may have discovered a way to control chemical reactions using the pulse of a laser, an accomplishment that has eluded researchers for years. The group developed a technique called static...
Gauging Semiconductor Temperature
Feb 1, 1999 — As any good cook knows, a recipe's cooking temperature is critical. For physicists constructing novel semiconductors, knowing the temperature has been a problem. But thanks to a new light-based technique developed at the University of Arkansas,...
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